JPH0928124A - Submerged direct sowing machine - Google Patents

Abstract

(57) [Summary] [Purpose] To configure a flooded direct sowing machine that appropriately covers the soil after sowing regardless of the local hardness of the field. [Structure] After seeds stored in a hopper are delivered by a delivery mechanism and released into a groove of a field scene P formed by a groover,
A seeding system for covering the soil by backfilling with the soil cover 17 biased downward by the biasing mechanism 52 is configured, and the biasing forces of the respective biasing mechanisms 52 adjacent to each other in the left-right direction are independently provided. An adjusting mechanism B for adjusting is provided corresponding to the adjacent biasing mechanism 52, a measuring mechanism for measuring the hardness of the field scene P is provided for this adjusting mechanism B, and a control means for operating based on the measurement result of this measuring mechanism is provided. Prepare

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention feeds seeds stored in a hopper by a feeding mechanism, discharges the seeds into a groove of a field scene formed by a groover, and then urges the seeds downward by an urging mechanism. A flooded direct seeder in which a multi-row seeding device for covering soil by backfilling with a covered soil tool is connected to a traveling machine body, more specifically, the biasing force of a biasing mechanism that acts on the soil cover tool is adjusted. Regarding technology.

[0002]

2. Description of the Related Art Conventionally, there is a flooding direct sowing machine constructed as described above in Japanese Patent Publication No. 6-79522. In this conventional example, soil in a field is detected by detecting the hardness of the soil. A control system is provided to apply (increase) the ground contact pressure and soil cover pressure of the float when it is hard, and to reduce the ground contact pressure and soil cover pressure of the float when the soil in the field is soft.

[0003]

In the conventional submerged direct sowing machine, the cover soil pressure for the seeds is appropriately set by adjusting the cover soil pressure corresponding to the hardness of the field, without impairing the germination of the seeds. It has a good aspect that it enables soil covering with a thickness capable of suppressing the flow of seeds due to water. However, in the field scene, there are partially hard and soft parts, so in the case of sowing multiple lines as in the conventional example, the one that uniformly adjusts the soil cover pressure of all the lines,
For example, when the field scene of some of the multiple fields is hard and the soil cover pressure of this field is set based on the hardness of the field scenes of other fields, the soil cover pressure in the hard field scene There is room for improvement because the soil cover is insufficient and the amount of soil cover is insufficient.

An object of the present invention is to reasonably configure a flooded direct seeding machine which is unlikely to cause an excess or deficiency in the amount of soil covered even when sowing for a plurality of rows.

[0005]

The features of the present invention (Claim 1) are, as described at the beginning, that the seeds of the hopper are fed by the feeding mechanism and discharged into the groove of the field scene formed by the groover.
In a flooded direct sowing machine that is connected to a traveling machine body, a seeding device for a plurality of articles that is backfilled with a soil cover urged downward by an urging mechanism, in a flooded direct seeder, An adjusting mechanism for independently adjusting the urging force of adjacent ones in the left-right direction is provided corresponding to the adjacent urging mechanism, and the action and effect are as follows.

In addition to the above characteristics, the present invention further comprises a measuring mechanism for measuring the hardness of a field scene in which each of the soil covering tools whose urging force is adjusted by the adjusting mechanism acts, and based on the measurement result of this measuring mechanism. And a control means for operating the adjusting mechanism of each of the soil cover tools (claim 2), the adjusting mechanism is provided with an actuator for changing the biasing force, and
The actuator is arranged in the gap between the hoppers (claim 3), and the seeding device is connected to the traveling machine body so as to be rotatable around an axis in a front-back direction, and the seeding device is also provided. And a rolling actuator that drives the seeding device in the rolling direction, and a control unit that drives the rolling actuator so that a signal from the sensor detects horizontal (claim 3). It is also characterized in 4), and its action and effect are as follows.

[0007]

According to the above feature (claim 1), after seeds are fed from the hopper by the feeding mechanism during sowing work,
The seeds released to the ditch of the field scene formed by the groover are covered with the soil cover, and the soil cover pressure is generated by the urging force of the urging mechanism. The amount of soil cover will be determined. In addition, since the biasing force of adjacent ones of the plurality of soil coverings can be independently adjusted by the adjusting mechanism, it is hard or soft in a part of the field corresponding to the plurality of seeding lines. Even if the part of
By adjusting the urging force of the urging mechanism corresponding to the soil covering tool at that portion with the adjusting mechanism, an appropriate amount of soil covering can be obtained.

According to the second aspect, even when a hard or soft portion exists in a part of the field corresponding to a plurality of seeding lines at the time of sowing work, the measuring mechanism measures the hardness of the portion and controls the hardness. The means adjusts the urging force of the urging mechanism corresponding to that part with the adjusting mechanism, and as a result, the soil cover pressure is automatically set to the required value and an appropriate amount of soil cover is obtained without any manual operation. It becomes a thing.

According to the present invention, the actuator for changing the urging force of the adjusting mechanism is arranged in the gap of the hopper, so that the dead space of the seeding device can be effectively used and the increase in size of the seeding device can be suppressed. Becomes

According to the fourth aspect of the invention, the seeding device is connected to the traveling machine body so as to be able to automatically roll. Therefore, even when the traveling machine body is tilted in the rolling direction, the seeding machine is set in a posture that follows the field scene. The seeding device is sown to a desired depth in the field scene while avoiding the phenomenon of floating or sinking in the field scene in the left-right direction, and the soil coverage amount is not over or short.

[0011]

[Effects of the Invention] Therefore, seeding for a plurality of rows is performed,
A flooded direct seeding machine was rationally constructed so as not to cause an excess or deficiency of the soil cover amount even if a hard portion and a soft portion exist in a part of the field scene (claim 1). In addition, a hard part in a part of the field,
Even if there is a soft part, the soil cover pressure is automatically adjusted to obtain an appropriate soil cover amount without any special operation (Claim 2), and an adjusting mechanism is provided so as not to increase the size of the seeding device. It can be arranged (claim 3), and even if the traveling body tilts in the rolling direction, the seeding depth of all the rows and the amount of soil covered on all the rows can be appropriately maintained (claim 4).

[0012]

Embodiments of the present invention will be described below with reference to the drawings. As shown in FIG. 1, a driving seat 4 is provided at the center of a traveling machine body 3 having a steering type front wheel 1 of a driving type and a rear wheel 2 of a driving type. Through the link mechanism 6 which is driven up and down by the lifting cylinder 5 with respect to the end portion, it can be freely rolled around the axis X in the front-back posture.
The seeding device A for row seeding is connected to form a flooded direct seeder.

As shown in FIGS. 3 to 4, the seeding device A has a transmission case 8 to which power synchronized with the traveling speed of the traveling machine body 3 is transmitted from the traveling machine body 3 via the transmission shaft 7, and the transmission case. 3 chain cases 9 to which power from 8 is transmitted, and 3 arranged below the chain cases 9
A hopper 11 made of a transparent resin, which has one leveling float 10 and integrally forms a storage section 11A for seeds S and a storage section 11B for granular fertilizer M (see FIGS. 5 and 6),
A feeding section 12 as a feeding mechanism configured to feed the seed S and the fertilizer M in the hopper at the same time, and a flexible and transparent seed hose that guides the seed S from the feeding section 12 downward. 13 and fertilizer M from the feeding section 12
A flexible and transparent fertilizer hose 14 for guiding the
In order to send the seed S from the seed hose 13 under the field scene, the seed grooving device 15 provided in the leveling float 10 and the fertilizer M from the fertilizer hose 14 are sent under the field scene. It is provided with a fertilizer grooving device 16 provided in the leveling float 10 and a soil cover 17 arranged at a rear position of the seed grooving device 15.

Also, in this seeding device, as shown in FIG. 8, the front ends of the three chain cases 9 are connected by tool frames 18, and auxiliary frames 19 are erected from both ends of the tool frames 18. Yes, and Fig. 2 and Fig. 3
As shown in FIG. 3, a bracket 20 formed at the rear end of each of the three chain cases 9 supports a horizontally long pipe frame 21, and a frame body 22 supporting the hopper 11 is connected to the pipe frame 21. There is.

As shown in FIG. 8, the axial center X for rolling is formed at the lower end portion of the vertical link 6A of the link mechanism 6, and the horizontally elongated shape is provided at the upper end portion of the vertical link 6A via the support frame 23. An electric rolling motor 25 that supports the screw shaft 24 in a posture and rotates the screw shaft 24 in the forward and reverse directions is provided.
The operation spring 27 is provided between the movable member 26 that is movable in the lateral direction by the rotation of the and the left and right auxiliary frames 19 and 19.
A rolling sensor 28 that interposes 27 and that measures the rolling posture of the seeding device with respect to the auxiliary frame 19 is provided. Also, as shown in FIG. 3, the chain case 9
The rear part of the leveling float 10 is swingably supported around a support shaft 31 with respect to an end of a swing arm 30 extending rearward from an adjustment shaft 29 that is rotatably provided on the lower surface of
The front position of the ground leveling float 10 is supported on the front surface of the tool frame 18 via a link member 32 that performs a bending operation, and the front position of the ground leveling float 10 at the center position in the left-right direction is vertically displaced. Rod 3 to measure quantity
3, a potentiometer-type float sensor 35 that is operated via the arm 34 is provided on the front side of the tool frame 18.

As shown in FIG. 1, as shown in FIG. 13, the float sensor 35 and the control sensitivity are provided to the control device 36 as a control means arranged below the driver's seat 4 of the traveling machine body 3. Setting device 37, rolling sensor 2
8. An input signal system from each of the rolling angle setting device 38 and the rolling angle setting device 38 is formed, and an output signal system from the control device 36 to the electromagnetic valve 39 of the lifting cylinder 5 and the rolling motor 25 is also formed. As a result, at the time of work, the rolling motor 25 moves in the direction in which the rolling posture of the seeding device A measured by the rolling sensor 28 is maintained.
Is driven to drive the lifting cylinder 5 in the direction in which the float attitude set by the control sensitivity setting unit 38 is maintained, and the control operation is performed so as to maintain the height of the seeding device A against the field scene at the set height. It is set. The control system is also configured to perform a control operation for adjusting the soil cover pressure of the soil cover 17, which will be described later.

In this seeding device A, as shown in FIGS. 2 and 3, the grooves are formed on the front side of each of the seed grooving device 15 and the fertilizer grooving device 16 so as to be fixed to the bottom surface of the leveling float 10. The cut plates 40 and 41 are arranged, and the digging amount of the fertilizer grooving device 16 into the field scene is increased, and the rushing amount of the seed grooving device 15 into the field scene P is increased. Groove 15 for seeds,
The horizontal arrangement intervals D are set to be equal to 30 cm, and the fertilizer groovers 16 are
It is arranged at a position close to the grooving device 15 for seeds, and the arrangement intervals thereof are set to be uneven.

As shown in FIGS. 5 to 7, the hopper 11 is provided with a partition wall 11C therein, a storage portion 11A for the seeds S is provided at the rear side of the partition wall 11C, and the fertilizer M is provided at the front side of the partition wall 11C. And a feeding roll 43 for seeds having a concave portion 43A formed on the outer surface of the case 42 with respect to the inside of the case 42.
The feeding roll 44 for fertilizer having the concave portion 44A formed on the outer surface thereof is disposed on the drive shaft 45 in the lateral posture in an externally fitted state,
A funnel-shaped guide member 46 for feeding the seed S from the seed feeding roll 43 to the seed hose 13, and a funnel-shaped guiding member 46 for feeding the fertilizer M from the fertilizer feeding roll 44 to the fertilizer hose 14. The guide members 47 are arranged at the rear side position and the front side position, respectively. Then, at the time of feeding the seed S, each feeding roll 4 is driven by the power from the drive shaft 45.
The seeds S are supplied from the right side position of the case 42 to the lower position of the seed feeding roll 43 by rotating 3, 4 in the direction of the arrow shown in the figure, and the fertilizer M is supplied from the left side position of the case 42 to the fertilizer. It is supplied to the upper position of the delivery roll 44.

As shown in FIGS. 4 and 9, the drive shaft 45 is disposed so as to laterally pass through the adjoining feeding portions 11 so as to be able to drive two threads at the same time. The clutches 48, 48 are provided. Also, a pair of crank arms 49, 49 provided on the left and right side surfaces of the rear portion of the chain case 9 and the one-way clutches 48, 4
8 operating arms 48A, 48A between the rods 50, 5
A system is formed in which the force from the rods 50, 50 pushed and pulled by the rotational movement of the crank arms 49, 49 is converted into the rotational movement by the one-way clutches 48, 48 and transmitted to the drive shaft 45 by interposing 0. At the same time, in this system, in order to smoothly rotate the drive shaft 45, a pair of crank arms 49,
The phase difference of 49 is set to 180 degrees so that the drive shaft 45 can always be rotated by the force from one of the crank arms 49.

As shown in FIGS. 10 and 12, the soil covering tool 17 is a rod 17A supported by the ground leveling float 10 via a support piece 51 so as to be swingable around an axis Y in a horizontal posture.
A pair of soil cover plates 17B, 17B is provided at the rear end of the rear end,
It is provided with a coiled spring 52 for urging the soil cover plates 17B, 17B toward the side where they are swung downward.
Further, in this seeding device A, a pair of adjusting mechanisms B and B and hardnesses of two left and right field scenes P and P so as to independently adjust the soil cover pressure of the soil cover 17 of the three left and right seeding systems. It is equipped with a pair of farm scene sensors C, C as a measuring mechanism for measuring.

As shown in FIGS. 4 and 10, the adjusting mechanism B
Is provided with a pair of horizontally long operation shafts 53 on the coaxial core so that the soil cover pressures of the three covering tools 17 can be adjusted equally in the left-right direction, and the operation shafts 5 are provided at the end positions of the operation shafts 53, 53.
Electric cylinders 56 are provided with potentiometer-type rotation sensors 54, 54 for measuring the rotation amounts of 3, 53, and as actuators for rotating the operation shaft 53 via an arm 55 connected to the operation shaft 53. Is arranged so that it can extend and contract in the vertical direction with respect to the gap in the left and right direction of the hopper 11. In addition, the operation arm 57 connected to the operation shaft 53 and the rod 17A of the soil cover 17 are linked in a suspended state via the coil spring 58 so that the soil cover pressure can be adjusted by changing the biasing force applied from the coil spring 58. It is configured.

As shown in FIGS. 11 and 12, the farm scene sensor C is provided with a pair of swing arms 60 and 61 that are swingable around a shaft 59, and one swing arm 60 has a swing end. The grounding drum 63 is supported around the support shaft 62 in an idle manner, and the sinking disk 65 is supported around the support shaft 64 in a swinging end of the other swing arm 61 in an integrated manner with the respective swing arms 60 and 61. The potentiometer 66 measures the level difference between the grounding drum 63 and the sinking disk 65 based on the relative amount of rocking of the operating pieces 60A and 61A that are rocking, and is provided with a potentiometer 66. In addition, in this auxiliary surface sensor C, the lateral dimension can be reduced by inserting the boss portion 62A of the support shaft 62 of the swing arm 60 supporting the ground drum 63 into the ground drum 63 side in the axial direction. When the level difference between the lower outer peripheral edge of the grounding drum 63 and the subsidence disc 65 is small, the subsidence amount of the subsidence disc 65 with respect to the farm scene P is small, and thus the farm scene P is determined to be hard. On the contrary, when the level difference between the lower outer peripheral edge of the grounding drum 63 and the subsidence disc 65 is large, the subsidence amount of the subsidence disc 65 with respect to the farm scene P is large, and thus the farm scene P is determined to be soft. Further, as shown in FIG. 13, the rotation sensor 54 of the adjusting mechanism B and the potentiometer 6 of the field scene sensor C are used.
A system for inputting the signal from 6 to the control device 36, and
A signal system for controlling the electric cylinder 56 of the adjusting mechanism B is formed.

At the time of direct sowing of paddy rice, as shown in FIG. 9, seed paddles as seeds S are sent from the hopper 11 to the seed hose 13 by the seed feeding roll 43 and passed through the grooving device 15. The seed paddy is released into the groove T of the field P formed by the grooving device 15, and immediately after this release, the soil cover tool 17 covers the soil in a form of backfilling the groove T. The fertilizer M in 11 is sent to the seeding position under a nearby field scene. Further, during the direct sowing work, the control device 36 performs the rolling operation and the elevating operation described above, and the hardness of the lateral position of the seeding device A is controlled by the control device 36 from the field scene sensor C.
The control device 36 determines the amount of rotation of the operation shaft 53 as a control target based on the signals from the left and right field scene sensors C, and rotates the operation shaft 53 by the amount that is the control target. Thus, the electric cylinder 56 is driven while feeding back the signal from the rotation sensor 54, and when the field scene P is hard, the pulling operation amount by the coil spring 58 is increased so as to increase the soil cover pressure on the side of the field scene sensor C. When the size of the field scene P is small and the field scene P is soft, control for increasing the pull-up operation amount by the coil spring 58 is independently performed so as to reduce the soil cover pressure on the field scene sensor C side. As a result, even if the hardness of a part of the field differs, the soil is covered with the soil pressure corresponding to the hardness to obtain an appropriate amount of soil.

[Other Embodiments] In addition to the above embodiments, the present invention is
For example, as shown in FIG. 14, the soil cover 17 may be formed by integrally molding the soil cover portion 17A and the arm portion 17B by blow molding a resin material.

Further, according to the present invention, it is possible to independently adjust the covering pressure of all the plurality of covering tools.

In the claims, reference numerals are provided for convenience of comparison with the drawings, but the present invention is not limited to the configuration shown in the attached drawings.

[Brief description of drawings]

Fig. 1 Overall side view of a direct sowing machine

FIG. 2 is an overall rear view of the seeding device.

FIG. 3 is a side view of the seeding device.

FIG. 4 is an enlarged rear view of the side part of the seeding device.

FIG. 5 is a vertical sectional side view of a seeding system portion of a hopper and a feeding mechanism.

FIG. 6 is a vertical sectional side view of a fertilizer application portion of a hopper and a feeding mechanism.

FIG. 7 is a plan view of the inside of the hopper.

FIG. 8 is a front view showing a rolling system of the seeding device.

FIG. 9 is a side view showing an operation system of the float sensor.

FIG. 10 is a side view of the adjusting mechanism.

FIG. 11 is a side view of the measuring mechanism.

FIG. 12 is a plan view showing a soil cover, an adjusting mechanism, and a measuring mechanism.

FIG. 13 is a block circuit diagram of a control system.

FIG. 14 is a plan view showing a soil covering tool of another embodiment.

[Explanation of symbols]

 3 Traveling Aircraft 11 Hopper 12 Feeding Mechanism 15 Groover 17 Soil Cover 25 Rolling Actuator 28 Sensor 36 Control Means 52 Energizing Mechanism 56 Actuator A Seeding Device B Adjusting Mechanism C Measuring Mechanism P Field Scene S Seed T Groove

Front page continuation (72) Inventor Mitsuhiro Horio 1-40, Nisshin-cho, Omiya-shi, Saitama 2 Within the Institute for the Promotion of Biological Specific Industrial Technology (72) Inventor Tomohiko Ichikawa 1-40-2, Nisshin-cho, Omiya-shi, Saitama (72) Inventor Takeshi Nasu 64 Ishizukita-cho, Sakai-shi, Osaka Prefecture Kubota Sakai Plant Co., Ltd. (72) Kuhei Ouchi 64, Ishizu-kitamachi, Sakai-shi, Osaka Kubota Corporation Sakai Factory

Claims (4)

[Claims] 1. A seed (S) stored in a hopper (11).
And the seeds (S) are discharged to the groove (T) of the field scene (P) formed by the grooving device (15), and then downward by the urging mechanism (52). A flooded direct seeder, which is connected to a traveling machine body (3) with a seeding device (A) for a plurality of articles for covering soil by backfilling with a biased soil covering (17), wherein the plurality of soil covers The adjacent biasing mechanisms (52), (5) are adjustment mechanisms (B) for independently adjusting the biasing forces of the respective biasing mechanisms (52) adjacent to each other in the left-right direction of the tool (17).
Direct flooding seeder equipped for 2). 2. A measuring mechanism (C) for measuring the hardness of a field scene (P) on which each soil cover (17) whose biasing force is adjusted by the adjusting mechanism (B) acts is provided, and this measuring mechanism (C) is used. 3. The flooded direct sowing machine according to claim 1, further comprising control means (36) for operating the adjusting mechanism (B) of each soil covering (17) based on the measurement result of (1). 3. The adjusting mechanism (B) comprises an actuator (56) for changing a biasing force, and the actuator (56) is provided with the hoppers (11), (1).
1) The flooded direct seeder according to claim 1 or 2, which is arranged in a gap between the two. 4. The seeding device (A) is rotatably connected to the traveling machine body (3) around an axis (X) in a front-back direction, and the rolling posture of the seeding device (A) is measured. Sensor (28) and a rolling actuator (25) for driving the seeding device (A) in a rolling direction, and the rolling actuator (25) is driven so that a signal from the sensor (28) detects horizontal. 1, equipped with control means (36),
The submerged direct sowing machine according to 2 or 3.